Automobile charger

ABSTRACT

A novel automobile charger which comprises a direct current voltage supply, wherein a positive pole of the direct current voltage supply is connected with one end or lead of a DC to DC module, one end of a battery voltage detection module and one end of a load module simultaneously, while a negative pole of the direct current voltage supply is connected with another end of the DC to DC module, one end of a microcontroller, one end of an automobile start control module and another end of the battery voltage detection module simultaneously. A third end of the DC to DC module is connected with another end of the microcontroller. Another three ends of the microcontroller are connected with the third end of the battery voltage detection module, another end of the automobile start control module and one end of a load detection module respectively. Another end of the load detection module is connected with a third end of the automobile start control module and another end of the load module simultaneously.

RELATED APPLICATIONS

This application claims the benefit of priority of Chinese applicationno. 201420212173. 5 filed Apr. 28, 2014, the entire content of which isincorporated herein by reference.

BACKGROUND

The present disclosure relates to an automobile charging device, inparticular relates to a novel automobile charger with a safe powersupply charging quickly.

Automobile charging is a big issue of traveling by automobile for thoseautomobile fans and businessmen, the maturity of the technology thereofis one of the critical factors restricting the application of theautomobile charger. However, current automobile chargers have commonproblems of not able to automatically detect whether a load isconnected, whether an electrode is connected with an automobile storagebattery reversely, whether an automobile engine or the storage batteryhas a reverse current, whether the battery state is suitable for heavycurrent power generation and so on. Accordingly, the present disclosureprovides a novel automobile charger with the safe power supply chargingquickly to solve the problems mentioned above, thus making theautomobile charging safe, quick, mature and propagable.

SUMMARY

A purpose of the present disclosure aims to provide a novel automobilecharger with the safe power supply charging quickly, in order to solvethe problems presented in the above background.

To achieve the purpose described above, the present disclosure providesthe following technical solutions: a novel automobile charger comprisesa direct current power supply, wherein a positive pole of the directcurrent power supply is connected with one end of a DC to DC module, oneend of a battery voltage detection module and one end of a load modulesimultaneously, while a negative pole of the direct current voltage isconnected with the other end of the DC to DC module, one end of amicrocontroller, one end of an automobile start control module and theother end of the battery voltage detection module simultaneously. Athird end of the DC to DC module is connected with the other end of themicrocontroller, and the other three ends of the microcontroller areconnected with the third end of the battery voltage detection module,the other end of the automobile start control module and one end of theload detection module respectively, wherein the other end of the loaddetection module is connected with the third end of the automobile startcontrol module and the other end of the load module simultaneously; theload module which comprises the automobile storage battery and theautomobile engine is located on the end of the load module.

As a further solution of the present disclosure that: the DC to DCmodule provides a stable voltage for the microcontroller which collectsrelevant data to conduct the corresponding control. The battery voltagedetection module conducts the measurement of the batter voltage, theautomobile start control module conducts the power supply or the poweroutage for the load module through the microcontroller, and the loaddetection module which comprises the automobile storage battery or theautomobile engine detects whether the load module is correctlyconnected.

As a further solution of the present disclosure that: the circuitemploys an electronic switch to supply power to the load module, whichcan offer more protection for the product, or reduce the product sizeand the material cost.

As a further solution of the present disclosure that: the batteryvoltage detection module provides protection for the power supplybattery to prevent damages caused by the discharging of the directcurrent power supply.

As a further solution of the present disclosure that: the load detectionmodule prevents improper operations of the user.

As a further solution of the present disclosure that: in the standbymode, the microcontroller closes all outputs when the voltage of thedirect current power supply is lower than that of the state being ableto supply power and then recovers when it is higher than that of thestate being able to supply power.

As a further solution of the present disclosure that: the automobilestart control module is the electronic switch.

Compared to the prior art, the present disclosure has the beneficialeffects that:

1. The present disclosure employs the electronic switch to control thesupply power for the load, this part can offer more protection for theproduct, and reduce the product size and the material cost.

2. The battery detection of the present disclosure can provide lowvoltage protection to prevent damages caused by the over discharging ofthe battery.

3. The load detection of the present disclosure can prevent improperoperations by the user, such as reversed polarity, which causes damagesto the automobile or the direct current power supply.

4. The present disclosure employs the voltage backflow protection forabnormal load, wherein the automobile start line is closed to protectthe battery when the abnormal voltage is detected.

5. The present disclosure has a fast charging function, and can beinstalled fixedly or moved portably according to the use requirements ofpeople.

6. The automatic detection module of the present disclosure canautomatically detects whether the load is connected, whether theelectrode is connected with the automobile storage battery reversely,whether the automobile engine or the storage battery has reversecurrent, whether the battery state is suitable for heavy current powergeneration, thereby protecting the load and the circuit and thus hascomplete functions.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a block diagram for the principle of the emergency powersupply of the safe intelligent automobile;

FIG. 2 is a circuit diagram for the emergency power supply of the safeintelligent automobile.

In figures: 1—DC to DC module, 2—microcontroller, 3—battery voltagedetection module, 4—automobile start control module. 5—load detectionmodule, 6—load module, 7—direct current power supply.

DETAILED EMBODIMENTS

The technical solutions of the present disclosure will be described moreclearly and fully in conjunction with drawings in the embodiments of thepresent disclosure, and obviously, the described embodiments are merelya part of the embodiments of the present disclosure, not all theembodiments. Based on the embodiments of the present disclosure, all theother embodiments obtained by the ordinary skilled in the art withoutcreative labors belong to the scope claimed by the present disclosure.

Refer to FIG. 1, a novel automobile charger comprises a direct currentpower supply, wherein the positive pole of the direct current powersupply is connected with one end or lead of the DC to DC module, one endof the battery voltage detection module and one end of the load modulesimultaneously, while the negative pole of the direct current voltage isconnected with the other end of the DC to DC module, one end of themicrocontroller, one end of the automobile start control module and theother end of the battery voltage detection module simultaneously. Athird end of the DC to DC module is connected with the other end of themicrocontroller, and the other three ends of the microcontroller areconnected with the third end of the battery voltage detection module,the other end of the automobile start control module and one end of theload detection module respectively, wherein the other end of the loaddetection module is connected with the third end of the automobile startcontrol module and the other end of the load module simultaneously; theload module which comprises the automobile storage battery and theautomobile engine is located on the end of the load module.

Refer to FIG. 2, the DC to DC module comprises a diode D1, a resistorR1, capacitor C1, a HT7530 voltage stabilizing tube, capacitors C2 andC3, wherein the positive pole of the diode D1 is connected with thepositive pole of the battery, the negative pole of the diode D1 isconnected with one end of the capacitor C1 and an IN port of the HT7530voltage stabilizing tube simultaneously through the resistor R1, and anOUT port of the HT7530 voltage stabilizing tube is connected with oneend of the capacitor C2, one end of the capacitor C3 and a VDD port ofthe microcontroller U2, while the other end of the capacitor C1, theother end of the capacitor C2 and the other end of the capacitor C3 aswell as a GND port of the HT7530 voltage stabilizing tube are groundedand connected with the negative pole of the battery simultaneously; a R1port of the microcontroller U2 is connected with the negative pole ofthe battery through a light-emitting diode L1 and a resistor R12 whichare in series connection, a B1 port of the microcontroller U2 isconnected with a EN port of the automobile start control module, a V0port of the microcontroller U2 is connected with the negative pole ofthe battery through a capacitor C4 and a resistor R7 which are inparallel connection, the V0 port is also connected with the VDD portthrough a slide rheostat RT, a V1 port of the microcontroller U2 is alsoconnected with the negative pole of the battery through a resistor 10, acapacitor C6 and a resistor R13 which are in parallel connection, the V1port is connected with the positive pole of the battery through aresistor R2, and is also connected with the negative pole of theautomobile storage battery and the automobile engine simultaneouslythrough a resistor R9, wherein two ends of the automobile storagebattery are in parallel connection with the capacitor C7, resistors R9,10, a capacitor C6 and a resistor R13 to form the load detection moduletogether, a V4 port of the microcontroller U2 is grounded through acapacitor C5, a VSS port of the microcontroller U2 and one end of thecapacitor C4 are grounded simultaneously. The other end of the capacitorC4 is connected with the VDD port of the microcontroller U2, theresistors R2, R13 and capacitor C6 form the battery voltage detectionmodule together, and a Drive port of the automobile start control moduleis connected with the automobile engine and one end of a resistor R14simultaneously, wherein the other end of the resistor R14 is grounded.

The DC to DC module in the present disclosure provides the stablevoltage for the microcontroller which collects relevant data to conductthe corresponding control. The battery voltage detection module conductsthe measurement of the batter voltage, and the automobile start controlmodule conducts the power supply or the power outage for the load modulethrough the microcontroller, wherein the load detection module detectswhether the load module is correctly connected.

The microcontroller in the present disclosure determines whether theautomobile storage battery is connected with the automobile enginethrough the load detection module, wherein the automobile start controlmodel is automatically activated and the battery starts to supply powerto the load module when the load is correctly connected; the automobilestart control model is automatically deactivated and the battery stopssupplying power to the load module when assuming that the load is notconnected or the positive and negative polarities are reverselyconnected. In the standby mode, the microcontroller closes all outputswhen the battery voltage is lower than 9V, and recovers the normaloperation only when the battery voltage is larger than 10V; theautomobile engine will generate the normal voltage to recharge thebattery after the automobile starts, whereas the automobile startcontrol module is deactivated immediately once the recharging voltage islarger than the voltage before that battery starts the power supply, toprotect the battery from damages caused by charging with the normalvoltage; the automobile start control module is the electronic switch,which can prevent the load from being reversely connected and rechargingof the normal voltage, thus protecting the battery and prolonginglifespan.

The automobile engine will generate abnormal voltage to recharge thedirect current power supply after the automobile starts, and theautomobile start control module is deactivated immediately once therecharging voltage is larger than the voltage before the direct currentpower supply starts the power supply, to protect the direct currentpower supply from damages caused by charging with normal voltage charge.

It is obvious for the skilled people in the art that the presentdisclosure is not merely limited to the details of the above exemplaryembodiments, and the present disclosure can be implemented in otherspecific forms without departing from the sprits or the basic featuresof the present disclosure. Thus, no matter to consider from which pointof view, the embodiments should be considered as exemplary andnon-limiting. The scope of the present disclosure is defined by theaccompanying Claims rather than the above description, therefore it isintended that all the changes fallen within the meanings and scope ofthe equivalent elements of the Claims are contained in the presentdisclosure. Any drawing reference in the Claims should not be regardedas limiting the Claims involved.

Furthermore, it should be understood that although the specification isdescribed according to the embodiments, but not every embodimentincludes only an independent technical solution, this manner ofdescription for the specification is only for clarity, therefore theskilled people in the art should take the Specification as a whole, andthe technical solutions in various embodiments can be combinedappropriately to form other implementations understandable for thoseskilled in the art.

1-6. (canceled)
 7. An automobile charger, comprising: a first pole of afirst battery connected with a first lead of a power converter, a firstlead of a battery level detector, and a first lead of a load; a secondpole of the first battery connected with a second lead of the powerconverter, a first lead of a microcontroller, a first lead of aswitching circuit and a second lead of the battery level detector; athird lead of the power converter connected with a second lead of themicrocontroller; and three additional leads of the microcontrollerconnected with a third lead of the battery level detector, a second leadof the switching circuit and a first lead of a load detector,respectively, wherein a second lead of the load detector is connectedwith a third lead of the switching circuit and a second lead of theload, and wherein the load includes a second battery and a motor.
 8. Theautomobile charger according to claim 7, wherein: the power converterincludes a one-way current device, a resistance R1, a capacitance C1, avoltage stabilizing device, a capacitance C2 and a capacitance C3; afirst terminal of the one-way current device is connected with a firstpole of the first battery; a second terminal of the one-way currentdevice is connected with a first lead of the capacitance C1 and an INport of the voltage stabilizing device through the resistance R1; an OUTport of the voltage stabilizing device is connected with a first lead ofthe capacitance C2, a first lead of the capacitance C3 and a power portof a microcontroller U2; a second lead of the capacitance C1, a secondlead of the capacitance C2 and a second lead of the capacitance C3 aswell as a common port of the voltage stabilizing device are grounded andconnected with a second pole of the first battery; a first port of themicrocontroller U2 is connected with the second pole of the firstbattery through a light source and a resistance R12 in seriesconnection; a second port of the microcontroller U2 is connected with aninput of the switching circuit; a third port of the microcontroller U2is connected with the second pole of the first battery through acapacitance C4 and a resistance R7 in parallel connection and is alsoconnected with the power port through a variable resistance RT; a fourthport of the microcontroller U2 is connected with the second pole of thefirst battery through a resistance R10, a capacitance C6 and aresistance R13 in parallel connection; the fourth port is also connectedwith the first pole of the first battery through a resistance R2 and isalso connected with a first pole of the second battery and the motorthrough a resistance R9; two leads of the second battery are in parallelconnection with the capacitance C7, the resistance R9, R10, thecapacitance C6 and the resistance R13 together to form the loaddetector; a fifth port of the microcontroller U2 is grounded through acapacitance C5; a common port of the microcontroller U2 and one end of acapacitance C4 are grounded; the second lead of the capacitance C4 isconnected with the power port of the microcontroller U2; the resistanceR2, the capacitance C6 and the resistance R13 form the battery leveldetector; and an output of the switching circuit is connected with themotor and one end of a resistance R14, wherein the other end of theresistance R14 is grounded.
 9. The automobile charger according to claim7, wherein: the power converter is operably configured to provide astable voltage for the microcontroller which collects relevant data toconduct corresponding control; the battery level detector conducts ameasurement of the voltage of the first battery; and the switchingcircuit conducts power supply or power outage for the load through themicrocontroller, wherein the load detector detects whether the load iscorrectly connected.
 10. The automobile charger according to claim 7,wherein the battery level detector is further configured to provide aprotection for the first battery.
 11. The automobile charger accordingto claim 7, wherein the microcontroller, when placed in a standby mode,closes all outputs when a voltage of the first battery is lower thanthat of a state being able to supply power and then recovers when thevoltage of the first battery is higher than that of the state being ableto supply power.
 12. The automobile charger according to claim 7,wherein the switching circuit is an electronic switch.
 13. A chargingdevice, comprising: a battery level detector to detect a level of afirst battery; a load detector to detect a type of connection of a load;a microcontroller to generate an output signal based on the level of thefirst battery and the type of connection of the load; and switchingcircuitry to selectively connect the first battery to the load based onthe output signal.
 14. The charging device of claim 13, wherein the typeof connection includes a proper connection of the load and an improperconnection of the load.
 15. The charging device of claim 14, wherein theload is a second battery and a motor powered by the second battery. 16.The charging device of claim 15, wherein the proper connection of theload is a polarity match between the second battery and the motor, andwherein the improper connection of the load is a polarity reversalbetween the second battery and the motor or a disconnection of thesecond battery from the motor.
 17. The charging device of claim 14,wherein the microcontroller: generates the output signal to cause theswitching circuitry to connect the first battery to the load if the loadis properly connected and the level of the first battery is above athreshold; and generates the output signal to cause the switchingcircuitry to disconnect the first battery from the load if i) the levelof the first battery is below the threshold, or ii) the load isimproperly connected.
 18. The charging device of claim 13, wherein thebattery level detector detects a recharging level of the first battery.19. The charging device of claim 18, wherein the microcontrollergenerates the output signal to cause the switching circuitry todisconnect the first battery from the load if the recharging level ofthe first battery is greater than a threshold.
 20. The charging deviceof claim 13, further comprising: a power converter to convert powerreceived from the first battery into a stable power source that powersthe microcontroller.
 21. The charging device of claim 20, wherein thepower converter is a direct current to direct current (DC-DC) converter.22. The charging device of claim 13, wherein the level of the battery isa voltage level.
 23. A method, comprising: detecting a level of a firstpower source; detecting a type of connection of a load; generating anoutput signal based on the level of the first power source and the typeof connection of the load; and selectively connecting the first powersource to the load based on the output signal.
 24. The method of claim23, wherein the type of connection includes a proper connection of theload and an improper connection of the load.
 25. The method of claim 24,wherein the load is a second power source and an electrical componentpowered by the second power source, wherein the proper connection of theload is a correct polarity connection between the second power sourceand the electrical component, and wherein the improper connection of theload is an incorrect polarity connection between the second power sourceand the electrical component or a disconnection of the second powersource from the electrical component.
 26. The method of claim 24,wherein the generating: generates the output signal to cause theswitching circuitry to connect the first power source to the load if theload is properly connected and the level of the first power source isabove a threshold; and generates the output signal to cause theswitching circuitry to disconnect the first power source from the loadif i) the level of the first power source is below the threshold, or ii)the load is improperly connected.